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Monthly climate in San Cosme, Argentina

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification San Cosme features a humid subtropical climate (Cfa). Temperatures typically range between 16 °C (61 °F) and 28 °C (83 °F) through the year, but rarely can drop to 1 °C (34 °F) or can rise to as high as 43 °C (110 °F). The average annual precipitation amounts to about 1190 mm (46.9 inches) and receives 89 rainy days on the 1 mm (0.04 inches) threshold annually. San Cosme enjoys an average of 3451 hours of sunshine throughout the year, and daylight varies from 10 hours 25 minutes to 13 hours 48 minutes per day.

Monthly average temperatures in San Cosme, Argentina

The warmest months in San Cosme are January, February and December, with daily mean temperatures ranging from 27 to 28 °C (81 - 83 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 16 to 18 °C (61 - 64 °F) throughout the day. On average each year, San Cosme experiences 227 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in San Cosme. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum42°C
(107°F)		42°C
(107°F)		40°C
(104°F)		35°C
(95°F)		34°C
(93°F)		33°C
(92°F)		32°C
(90°F)		38°C
(100°F)		41°C
(105°F)		43°C
(110°F)		40°C
(105°F)		40°C
(104°F)
Mean maximum38°C
(100°F)		38°C
(100°F)		37°C
(99°F)		33°C
(92°F)		30°C
(87°F)		28°C
(82°F)		31°C
(88°F)		35°C
(95°F)		37°C
(99°F)		38°C
(101°F)		37°C
(99°F)		38°C
(101°F)
Average high33°C
(92°F)		33°C
(91°F)		31°C
(87°F)		27°C
(81°F)		23°C
(74°F)		22°C
(71°F)		21°C
(71°F)		25°C
(77°F)		26°C
(80°F)		28°C
(83°F)		30°C
(87°F)		33°C
(91°F)
Daily mean28°C
(83°F)		27°C
(81°F)		25°C
(78°F)		22°C
(72°F)		19°C
(66°F)		17°C
(62°F)		16°C
(61°F)		18°C
(64°F)		21°C
(69°F)		23°C
(74°F)		25°C
(77°F)		27°C
(81°F)
Average low23°C
(74°F)		22°C
(72°F)		20°C
(69°F)		18°C
(65°F)		15°C
(59°F)		13°C
(55°F)		11°C
(53°F)		12°C
(54°F)		15°C
(60°F)		18°C
(64°F)		19°C
(67°F)		21°C
(70°F)
Mean minimum18°C
(64°F)		16°C
(62°F)		15°C
(59°F)		12°C
(54°F)		8°C
(47°F)		4°C
(40°F)		2°C
(36°F)		4°C
(39°F)		9°C
(49°F)		12°C
(54°F)		14°C
(58°F)		16°C
(61°F)
Minimum15°C
(60°F)		14°C
(57°F)		13°C
(55°F)		9°C
(49°F)		6°C
(43°F)		2°C
(36°F)		1°C
(34°F)		1°C
(34°F)		8°C
(46°F)		11°C
(53°F)		11°C
(52°F)		14°C
(58°F)

Compare climate in San Cosme with other places

Compare temperature, precipitation, sunshine, UV index in San Cosme, Argentina with other places around the world.

Monthly average precipitation in San Cosme, Argentina

San Cosme usually has the most precipitation in March, May and November, with an average of 9 rainy days and 141 mm (5.6 inches) of precipitation per month. The driest months in San Cosme are June, July and August. On average, 51 mm (2.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Cosme. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)130 (5.1)72 (2.8)136 (5.4)126 (5.0)139 (5.5)66 (2.6)42 (1.7)44 (1.7)89 (3.5)124 (4.9)148 (5.8)72 (2.8)
Average precipitation days (≥ 1 mm)9797106549986

Monthly sunshine hours in San Cosme, Argentina

The sunniest months in San Cosme are March, November and December, when the sun shines an average of 11 hours 3 minutes a day. Least sunny months in San Cosme: May, June and July receive an average of 7 hours 43 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in San Cosme. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours275310314273239225246293277292325377
Mean daily daylight hours13h 37m12h 59m12h 12m11h 24m10h 44m10h 25m10h 36m11h 10m11h 56m12h 44m13h 27m13h 48m

Solar UV radiation in San Cosme, Argentina

San Cosme experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure. May, June and July are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 7. For more detailed information, check out our hourly San Cosme UV Index data.

Average daily maximum UV levels by month for San Cosme. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)15141310756710131414